Test Automation with TestNG

Features:

• Sample of Annotation Usages
• Listeners
• Parallel Testing
• Base Data Provider
• Retry Mechanism & RerunIfTestFails Custom Annotation
• Extent Report
• Singleton WebDriver
• Logs

Test Execution

documentation

Running a specific test class

mvn test -Dtest=Test/LoginTests.java

Running a specific test case in a class

mvn test -Dtest=Test/LoginTests.java#loginTestWithInvalidCredentials

Running a single xml

mvn clean test -DsuiteXmlFile=testng.xml

mvn clean verify -Drunner=testng.xml

Running all the xml files mentioned in the pom.xml:

mvn clean test -DsuiteXmlFile

All of the tests are independent from each other, UNLESS we create dependency.

Listeners

In TestNG, listeners are interfaces that allow you to customize the behavior of the testing framework to perform specific actions at different stages. We use it generally for loging at stages like onStart, onFinish, onTestStart, onTestSuccess, onTestFailure, onTestSkipped

• TestNG provides several built-in listeners.
• Listeners used in this framework: ITestListener, IAnnotationTransformer, IRetryAnalyzer

To use a listener, we need to configure it in the testng.xml. You can add multiple listeners.

<listeners>
    <listener class-name="Framework.Core.Listeners.TestListener"/>
    <listener class-name="com.aventstack.extentreports.testng.listener.ExtentITestListenerAdapter"/>
</listeners>

If you run your tests only through XML files, then you don't need to mention the listener in the test. Otherwise, you have to use the @Listeners annotation to link it to your test.

@Listeners({ExtentITestListenerAdapter.class})
public class LoginTests{ } 

Parallel Testing

Parallel testing in my project is enabled by the following configurations and annotations:

1. The @DataProvider annotation has the parallel attribute set to true, which allows the test methods to run in parallel.

   @DataProvider(name = "testData", parallel = true)
   public Object[][] testData() {
       return new Object[][] {
           { "Test1" },
           { "Test2" },
           { "Test3" }
       };
   }

2. The testng-parallelsuite.xml specifies the parallel attribute set to tests and a thread-count of 3, which allows multiple test classes to run in parallel.

   <!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd" >
   <suite name="ParallelSuite" parallel="tests" thread-count="3">
       <test name="Test1">
           <classes>
               <class name="Test.parallelExecution.ParallelSuiteTest"/>
           </classes>
       </test>
       <test name="Test2">
           <classes>
               <class name="Test.parallelExecution.ParallelSuiteTest"/>
           </classes>
       </test>
       <test name="Test3">
           <classes>
               <class name="Test.parallelExecution.ParallelSuiteTest"/>
           </classes>
       </test>
   </suite>

These configurations together enable parallel execution of your test methods and test classes.

pom.xml

Use the maven-surefire-plugin to run your tests through the pom.xml file Here is an example configuration:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>3.5.0</version>
            <configuration>
                <parallel>methods</parallel>
                <threadCount>5</threadCount>
                <suiteXmlFiles>
                    <suiteXmlFile>src/test/resources/xml/testng-parallelsuite.xml</suiteXmlFile>
                </suiteXmlFiles>
            </configuration>
        </plugin>
    </plugins>
</build>

To run the tests:

mvn clean test